you can go to playstation network in support they will give you the model numbers for the 20/40/60/80/120/160/250 consoles.or switch on your ps3 and check how much memory left! it will show the percentage there ie# "system settings" then "system information".free space..... will tell you how much used 30gb/55gbmines 6ogb console.on back of console will tell you your model number,check it against playstation system ps3 console model numbers.

ok heres the 80gb PS3 MODEL NUMBER CECHE01below are some bits of info for PS3 FANS,it might enlighten you!ps3 comes also in 3 different flavours for developers and retailers.developers get a ps3 test unit[debugging station]that allows it to run unsigned code.the machine is normally labelled test below the playstation 3 logo,and it comes with a test kit.the ps3 model numbers for these test machines are similar to the ones for consumers,but instead of the CECH prefix the model numbers have a DECH prefix.unlike customer units a ps3 test unit has an extra "settings""debug settings" menu in the XMB which allows many options like downgrading to previous ps3 test firmwares[2.00 and higher]changing the ps3 region and treating a usb drive as a blue-ray drive.by default its missing blu-ray movie decryption keys but has decryption keys for running debug encrypted software.so the test unit cannot decrypt and play retail blu-ray discs but can run retail ps3 games.in the DECHA models,ps2 games any region debug and retail loading were disabled but late firmware allows it.DECHAOOJ/DECHAOOA#SIMILAR TO CHECHAOODECHAOO7J/DECHAOO7A#SIMILAR TO CECHAOODECHJOOJ/DECHJOOA#SIMILAR TO CECHJOODECH-2OOA#PS3 SLIM VERSIONnote that an "s" prefix can be attatched to end of the ps3 test model number which designates the unit is made specifically for trade shows,so the test logo is not next to the playstation logo.the "A"&"J" denote JAPAN/AMERICA.developers also get a ps3 tool unit[reference tool]that comes with an extra internal harddrive,512mb of XDR RAM 256mb more than consumer unit and a full devkit.the unit has extra hardware on board that listens to port 1000,and connecting this port with a webbrowser opens up a system configuration page,which allows to set the machine to emulate different models like 20gb/60gb.early versions were large and squarish and do not resemble consumer ps3 but later versions do.DECR-1000/DECR-1000A=2 400GB HARDDRIVES/2 hdmi/4 LAN ports,1 for debugging/analog audio outputs/VGA output.DECR-1400J/DECR-1400A=1 hdmi/2 lan/512mb system ram/256mb rsxthis one resembles consumer ps3.